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<TITLE>New SOIC geometry</TITLE>
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<P><A NAME="idh_new_soic_geometry"></A><font size=5><U>New SOIC geometry</U><br>&nbsp;</font></P>

<P>In the next dialogbox the parameters for a SOIC geometry can be entered. The SOIC geometry is a SMD based device.</P>

<P>The following parameters can be changed:</P>

<P><U>Nr pins</U></P>

<P>If the total amount of pins is two times the NrPins entered. The pinnumber counting starts with one, and increments with one for the following pins. The pin counting direction for the left column with pads is downwards, and for the right column with pads upwards.</P>

<P><U>Pad size X,Y</U></P>

<P><U>Pitch</U></P>

<P><U>Pad size solder mask</U></P>

<P>If the solder mask pad is not necessary, fill one of the parameters (X,Y) with zero.</P>

<P><U>Pad size paste mask</U></P>

<P>If the paste mask pad is not necessary, fill one of the parameters (X,Y) with zero.</P>

<P><U>Clearance</U></P>

<P>The initial clearance is the clearance used for this geometry.</P>

<P><U>Distance</U></P>

<P>The <B>Use default rules for solder paste/mask and clearance</B> button can be used the fill in values based on the pad size.</P>

<P><A HREF="smd_pad.htm"><IMG SRC="../images/button6.gif" ALT="" BORDER=0>Definition of a SMD pad</A></P>

<P><A HREF="design_rules_pad.htm"><IMG SRC="../images/button6.gif" ALT="" BORDER=0>Design rules pad</A></P>

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